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<a name="boost.program_options.basic_command_line_parser"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Class template basic_command_line_parser</span></h2>
<p>boost::program_options::basic_command_line_parser</p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../program_options/reference.html#header.boost.program_options.parsers_hpp" title="Header &lt;boost/program_options/parsers.hpp&gt;">boost/program_options/parsers.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> charT<span class="special">&gt;</span> 
<span class="keyword">class</span> <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// <a class="link" href="basic_command_line_parser.html#boost.program_options.basic_command_line_parserconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="basic_command_line_parser.html#idp65232816-bb"><span class="identifier">basic_command_line_parser</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="identifier">charT</span> <span class="special">&gt;</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html#idp66895888-bb"><span class="identifier">basic_command_line_parser</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">charT</span> <span class="special">*</span><span class="keyword">const</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="basic_command_line_parser.html#idp61980400-bb">public member functions</a></span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a class="link" href="basic_command_line_parser.html#idp61980576-bb"><span class="identifier">options</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="options_description.html" title="Class options_description">options_description</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> 
  <a class="link" href="basic_command_line_parser.html#idp61981856-bb"><span class="identifier">positional</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="positional_opt_idp45031152.html" title="Class positional_options_description">positional_options_description</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a class="link" href="basic_command_line_parser.html#idp61983136-bb"><span class="identifier">style</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a class="link" href="basic_command_line_parser.html#idp44976912-bb"><span class="identifier">extra_parser</span></a><span class="special">(</span><span class="identifier">ext_parser</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_parsed_options.html" title="Class template basic_parsed_options">basic_parsed_options</a><span class="special">&lt;</span> <span class="identifier">charT</span> <span class="special">&gt;</span> <a class="link" href="basic_command_line_parser.html#idp44977952-bb"><span class="identifier">run</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a class="link" href="basic_command_line_parser.html#idp44978768-bb"><span class="identifier">allow_unregistered</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a class="link" href="basic_command_line_parser.html#idp65386400-bb"><span class="identifier">extra_style_parser</span></a><span class="special">(</span><span class="identifier">style_parser</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp121441504"></a><h2>Description</h2>
<p>Command line parser.</p>
<p>The class allows one to specify all the information needed for parsing and to parse the command line. It is primarily needed to emulate named function parameters -- a regular function with 5 parameters will be hard to use and creating overloads with a smaller nuber of parameters will be confusing.</p>
<p>For the most common case, the function parse_command_line is a better alternative.</p>
<p>There are two typedefs -- command_line_parser and wcommand_line_parser, for charT == char and charT == wchar_t cases. </p>
<div class="refsect2">
<a name="idp121442784"></a><h3>
<a name="boost.program_options.basic_command_line_parserconstruct-copy-destruct"></a><code class="computeroutput">basic_command_line_parser</code> 
        public
       construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="idp65232816-bb"></a><span class="identifier">basic_command_line_parser</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="identifier">charT</span> <span class="special">&gt;</span> <span class="special">&gt;</span> <span class="special">&amp;</span> args<span class="special">)</span><span class="special">;</span></pre>
<p>Creates a command line parser for the specified arguments list. The 'args' parameter should not include program name. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp66895888-bb"></a><span class="identifier">basic_command_line_parser</span><span class="special">(</span><span class="keyword">int</span> argc<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">charT</span> <span class="special">*</span><span class="keyword">const</span> argv<span class="special">)</span><span class="special">;</span></pre>
<p>Creates a command line parser for the specified arguments list. The parameters should be the same as passed to 'main'. </p>
</li>
</ol></div>
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<div class="refsect2">
<a name="idp121453904"></a><h3>
<a name="idp61980400-bb"></a><code class="computeroutput">basic_command_line_parser</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a name="idp61980576-bb"></a><span class="identifier">options</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="options_description.html" title="Class options_description">options_description</a> <span class="special">&amp;</span> desc<span class="special">)</span><span class="special">;</span></pre>
<p>Sets options descriptions to use. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> 
<a name="idp61981856-bb"></a><span class="identifier">positional</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="positional_opt_idp45031152.html" title="Class positional_options_description">positional_options_description</a> <span class="special">&amp;</span> desc<span class="special">)</span><span class="special">;</span></pre>
<p>Sets positional options description to use. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a name="idp61983136-bb"></a><span class="identifier">style</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span></pre>
<p>Sets the command line style. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a name="idp44976912-bb"></a><span class="identifier">extra_parser</span><span class="special">(</span><span class="identifier">ext_parser</span><span class="special">)</span><span class="special">;</span></pre>
<p>Sets the extra parsers. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_parsed_options.html" title="Class template basic_parsed_options">basic_parsed_options</a><span class="special">&lt;</span> <span class="identifier">charT</span> <span class="special">&gt;</span> <a name="idp44977952-bb"></a><span class="identifier">run</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Parses the options and returns the result of parsing. Throws on error. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a name="idp44978768-bb"></a><span class="identifier">allow_unregistered</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Specifies that unregistered options are allowed and should be passed though. For each command like token that looks like an option but does not contain a recognized name, an instance of basic_option&lt;charT&gt; will be added to result, with 'unrecognized' field set to 'true'. It's possible to collect all unrecognized options with the 'collect_unrecognized' funciton. </p>
</li>
<li class="listitem"><pre class="literallayout"><a class="link" href="basic_command_line_parser.html" title="Class template basic_command_line_parser">basic_command_line_parser</a> <span class="special">&amp;</span> <a name="idp65386400-bb"></a><span class="identifier">extra_style_parser</span><span class="special">(</span><span class="identifier">style_parser</span> s<span class="special">)</span><span class="special">;</span></pre></li>
</ol></div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2004 Vladimir Prus<p>Distributed under the Boost Software License, Version 1.0.
      (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at 
      <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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